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Autoignition and Combustion of Natural Gas in 4 Stroke HCCI Engine
Daesu JUN,Susumu SATO,Kazuaki ISHII,Norimasa IIDA 한국자동차공학회 2001 한국자동차공학회 Symposium Vol.- No.-
Homogeneous charge compression ignition (HCCI) is regarded as next generation combustion method in terms of high thermal efficiency and low emissions. It is difficult to control auto ignition timing and combustion duration of since they are controlled primarily by chemical kinetics of the air-fuel mixture. In this study, experiment work and chemical kinetics calculation were carried out to clarify the effects of equivalence ratio, intake temperature and intake pressure on autoignition and combustion. Autoignition occured when the mass averaged gas temperature reached a certain temperature regardless of equivalence ratio, intake temperature and intake pressure. To realize high thermal efficiency and low THC, CO emissions, it is necessary to prepare operation conditions that maximum mass averaged gas temperature is around 1500K.<br/> <br/>
( Jeong Ki Kim ),( Jeong Hyun Nam ),( Kwang Soo Lyoo ),( Hyoungjoon Moon ),( Woonsung Na ),( Eun Jung Song ),( Minjoo Yeom ),( Sang Mu Shim ),( Dae Gwin Jeong ),( Dong Jun An ),( Bo Kyu Kang ),( Daesu 한국미생물 · 생명공학회 2016 Journal of microbiology and biotechnology Vol.26 No.6
H3N2 canine influenza virus emerged in South Korea in 2007 and subsequently spread to China and Thailand, causing epidemic or endemic respiratory diseases in dogs. Through intermammalian species transmission, the virus has also infected cats. However, no direct evidence of significant genetic evolution has been reported since its first emergence. Here, we describe in depth the genetic and molecular characteristics of the ancestral strain (i.e., the first virus isolate from South Korea) of the H3N2 canine influenza virus currently circulating in East Asia.